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-   -   Garage door opener having trouble closing door (http://www.diychatroom.com/f18/garage-door-opener-having-trouble-closing-door-152941/)

camelian 08-07-2012 12:58 PM

Garage door opener having trouble closing door
 
Hi all,

My garage door opener is only closing halfway and then opens again. It does this regardless of whether the opener is attached the door or not (both under load and not).

I noticed that the gear that engages the chain is sitting at an angle..is this a major issue? There's what looks to be a washer that's sitting off at an angle and the pole going up from the motor is at an angle as well.

Is there any simple fix besides replacing the opener or is it even possible for a fairly competent but non-professional like myself to fix? Any idea as to what might have caused this?

Thanks in advance

https://webspace.utexas.edu/%7Ejk244...house/gear.jpg

bob22 08-07-2012 01:27 PM

It looks like the bearing for your drive shaft has given up the ghost. One of these days it will likely stop for good. Make sure you know how to open/close your door by disengaging the traveler.
How old is the opener? If 10+, it likely is time for new.
You may be able to get parts for it but that all depends on your drive, abilities, and parts availability.

camelian 08-07-2012 01:33 PM

Opener was made in 5/29/06 so I don't suspect it to be older than 6 years. I thought these guys had longer life expectancies..especially a Chamberlain Lift Master.

So there's not much hope for this guy huh? Is it even worth trying to fix vs buying a new one? It's weird that it still runs for about half the length of the track but then just reverses by itself, both under load and not under load

joecaption 08-07-2012 01:39 PM

I'd remove the chain and see if the sprockets loose or the bearings move when you try to move it from side to side.

bob22 08-07-2012 02:47 PM

Take a look at the chain sprocket when it is opening/closing and see if you see it get hung up/change position etc...
If not, you could try adjusting the up/down force and it might fix it. Usually a little screw on the side of the opener that you turn about 1/8th of a turn at a time to see if it improves.

camelian 08-08-2012 09:01 AM

Quote:

Originally Posted by joecaption (Post 983565)
I'd remove the chain and see if the sprockets loose or the bearings move when you try to move it from side to side.

Here is a clip of what it's doing: http://www.youtube.com/watch?v=-d2Yv-d0kto

I took off the chain and the sprocket assembly on the opener moves up and down about 1mm. When it's at the down position, it doesn't really move side to side. When I lift it up, it moves side to side. It usually operates with the assembly lifted up and leaning towards the outside.

Is this just a matter of replacing the gear and sprocket assembly? (http://www.garagedooropenerparts.net/geandspas1.html)

I have home warranty good for another month with a $60 service call fee but after I replaced the chain it's working again..though the sprocket is still operating at an angle and I hear some gear skipping.

AandPDan 08-08-2012 11:37 AM

It may not be the opener - yet. Check the door operation first.

Disconnect the opener from the door with the pull.

Then, open and close the door manually. How does it seem to work? It should go up/down smoothly and stop in any position.

firehawkmph 08-08-2012 09:35 PM

Check you door operation manually like Dan suggested. If it works smoothly then focus on the opener. That shaft has too much sideplay. I don't know offhand if there is a replaceable bushing on your opener. If there is, get one. Try your old shaft in there first and see if that gets rid of the side play. Your gears don't look to be worn much at all.
Mike Hawkins:)

k_buz 08-08-2012 09:53 PM

I'd check the photo eyes. Not only are they aligned correctly, but that they are secure and not vibrating.

camelian 08-09-2012 08:55 AM

Quote:

Originally Posted by AandPDan (Post 984232)
It may not be the opener - yet. Check the door operation first.

Disconnect the opener from the door with the pull.

Then, open and close the door manually. How does it seem to work? It should go up/down smoothly and stop in any position.

The door does seem to be a little heavy coming down. It will come down on its own starting about halfway down. Maybe that led to premature wear on the bushing? Luckily it looks like this opener has a fairly easily replaceable gear and sprocket assembly. I'm going to try replacing it since I found a replacement kit for only $26 on eBay

The sensors are mounted securely and working as they should

AandPDan 08-09-2012 09:03 AM

Quote:

Originally Posted by camelian (Post 984896)
The door does seem to be a little heavy coming down. It will come down on its own starting about halfway down.

You need to adjust the tension. The springs should balance the load of the door so that it stops and stays where you leave it.

If it's tension springs it's not that hard. If it's a torsion spring, call someone in.


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